because its a generality if its a generality wed expect to not see it be unique to islam nor not to affect christianity rather wed expect to see many muslims be better than their religion commands and many christians be worse than their religion commands however in general the fact that one group is acting in accordance with their religion and the other isnt would cause us to see a general distinction and what do you know apostasy isnt a serious issue in the major christian areas while it is in the islamic areas